Engineering guide
How cold rooms and cold stores are engineered and installed
A cold room project moves through seven engineering stages, from design conditions to handover. This guide explains what happens at each stage, what a buyer should check, and how ColdMatch supports the process.
ColdMatch does not design, manufacture or install cold rooms. The engineering and installation are done by the qualified supplier or contractor you select. ColdMatch helps you define the brief, find suitable suppliers and compare their proposals.
The seven stages
1. Design conditions
What the engineers do
Fix product, storage temperature, daily intake, product inlet temperature, maximum outdoor temperature and humidity.
What to check
- Outdoor design temperature matches local extremes (often 43–50 °C in the Gulf)
- Daily intake and inlet temperature are realistic
How ColdMatch helps
We help you gather these inputs into one written project brief.
2. Refrigeration load calculation
What the engineers do
Calculate transmission, product, air infiltration, people, lighting and defrost loads, then add a safety margin.
What to check
- Load sheet shared, not just a final kW figure
- Door openings and intake peaks included
How ColdMatch helps
We ask each supplier for the load sheet so bids are sized on the same basis.
3. Envelope and insulation
What the engineers do
Choose panel type and thickness (typically 100 mm chilled, 150–200 mm frozen), floor insulation, heating against frost heave, doors and vapour barriers.
What to check
- Fire rating of panel core (PIR vs mineral wool)
- Underfloor heating for frozen rooms
How ColdMatch helps
We line up panel specifications side by side when comparing offers.
4. Refrigerant and plant selection
What the engineers do
Select refrigerant (e.g. CO₂, ammonia, low-GWP HFO blends), compressor type, condensers and evaporators, and redundancy.
What to check
- Refrigerant complies with local F-gas or phase-out rules
- N+1 redundancy where product loss is costly
How ColdMatch helps
We flag refrigerant and redundancy differences between proposals.
5. Controls and monitoring
What the engineers do
Specify controllers, alarms, temperature logging, remote access and, for pharma, validated monitoring.
What to check
- Alarm escalation and data retention
- GDP mapping needs for pharmaceuticals
How ColdMatch helps
We include monitoring requirements in the RFQ so they are priced, not assumed.
6. Installation
What the engineers do
Prepare site and power, erect panels, install plant and piping, pressure-test, evacuate and charge refrigerant.
What to check
- Installer holds refrigerant handling certification
- Incoming power and backup capacity confirmed
How ColdMatch helps
We help you confirm scope boundaries (civils, power, freight) before contract.
7. Commissioning and handover
What the engineers do
Pull-down test, performance at design conditions, temperature mapping, training, as-built drawings and O&M manuals.
What to check
- Pull-down time and final temperatures recorded
- Warranty and service plan in writing
How ColdMatch helps
We give you a handover checklist to hold suppliers to what was promised.
Scaling up: designing a cold storage facility
Large cold stores follow the same seven stages, with extra design decisions at facility level:
- Capacity and throughput
- Size by pallet positions and daily pallets in/out, not volume alone; peak season sets the refrigeration and dock count.
- Layout and temperature zones
- Separate frozen, chilled and ambient zones, with an anteroom or chilled dock to limit warm air entering frozen areas.
- Loading docks
- Insulated dock doors, levellers and seals sized to vehicle traffic; each dock opening is a major heat and energy load.
- Racking and handling
- Selective, drive-in, mobile or automated racking changes building height, pallet density, aisle width and forklift choice.
- Plant room and refrigerant
- Central ammonia or CO₂ plants are common above a few hundred kW; plant room location, ventilation and safety zoning follow EN 378 / IIAR.
- Power, backup and energy
- Confirm grid capacity early; plan generator or solar backup and heat recovery. Energy use is typically 30–55 kWh/m³/yr chilled and 55–95 frozen.
- Building and floor
- Frozen floors need insulation and underfloor heating against frost heave; the building shell, fire strategy and permits are usually a separate civil contract.
Standards engineers work to
- EN 378 / ISO 5149 — refrigeration system safety
- IIAR 2 & 9 — ammonia (NH₃) systems
- ASHRAE Handbook — Refrigeration (load calculation)
- EU F-gas Regulation 2024/573 — refrigerant choice
- WHO / EU GDP — pharmaceutical storage
Common questions
How ColdMatch Group works — independent B2B procurement and sourcing platform — ColdMatch Group is an independent B2B procurement and sourcing platform for industrial refrigeration, cold storage and cold-chain projects from USD $250K+, where the ColdMatch team reviews each buyer brief, contacts suitable third-party suppliers on the buyer's behalf and organizes their responses.